<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        *{
            padding:0;
            margin: 0;
        }
        canvas{
            float: left;
            display:block;
        }

        #UIBox{
            padding: 10px;
            position: absolute;
            top: 0;
            left: 0;
            width: 200px;
            height: 200px;
            /* background-color: white; */
            background-color: rgba(127, 127, 127, 0.3);
            color: #ffffff;
        }
        #helpBox{
            padding: 5px;
            color: #ccffcc;
        }
        #infoBox{
            padding: 5px;
            color: #ffffcc
        }
        #selectBox{
            padding: 5px;
            color: #ccddff
        }
        button{
            padding:2px;
            margin:3px;
        }
    </style>
</head>
<body>
    <div id="UIBox">
        <div id="helpBox">
            左键喷射<br/>
            右键拖动旋转场景<br/>
            滚轮缩放<br/>
        </div>
        <div id="infoBox">
            弹药数:<span id="bulletNum">100</span>
        </div>
        <div id="selectBox">
            是什么隐藏于黑暗中<br/>
            <div id="optionBox">
            </div>
        </div>
    </div>
    <script type="module" src="./paint.js"></script>
</body>
</html>